src/DotPulsar/Abstractions/IReaderBuilder.cs

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace DotPulsar.Abstractions;

/// <summary>
/// A reader building abstraction.
/// </summary>
public interface IReaderBuilder<TMessage>
{
    /// <summary>
    /// Number of messages that will be prefetched. The default is 1000.
    /// </summary>
    IReaderBuilder<TMessage> MessagePrefetchCount(uint count);

    /// <summary>
    /// Whether to read from the compacted topic. The default is 'false'.
    /// </summary>
    IReaderBuilder<TMessage> ReadCompacted(bool readCompacted);

    /// <summary>
    /// Set the reader name. This is optional.
    /// </summary>
    IReaderBuilder<TMessage> ReaderName(string name);

    /// <summary>
    /// The initial reader position is set to the specified message id. This is required.
    /// </summary>
    IReaderBuilder<TMessage> StartMessageId(MessageId messageId);

    /// <summary>
    /// Register a state changed handler.
    /// </summary>
    IReaderBuilder<TMessage> StateChangedHandler(IHandleStateChanged<ReaderStateChanged> handler);

    /// <summary>
    /// Set the topic for this reader. This is required.
    /// </summary>
    IReaderBuilder<TMessage> Topic(string topic);

    /// <summary>
    /// Create the reader.
    /// </summary>
    IReader<TMessage> Create();
}